中山大学学报（自然科学版）2016，Vol.55Issue(6)：136-139,4.DOI:10.13471/j.cnki.acta.snus.2016.06.021
新型巯基功能化二氧化硅微球的制备及其对银离子的吸附
Facile preparation of thiol-functionalized SiO2 microspheres and their adsorption to silver ions
摘要
Abstract
The SiO2 microspheres with abundant thiol on the surface have the same property of adsorption to heavy metal ions as that of the mesoporous silica.In one-pot,the thiol-functionalized SiO2 micro-spheres were prepared by a sol-gel method,and SiO2 microspheres had a narrow particle size distribution and well sphere with diameter around 1 μm.FTIR and Raman spectroscopy confirmed there were a great amount of thiols on the surface of microspheres.Meanwhile,the adsorption process of silver ions by the microspheres finished within u1 tra-short time,which was in accord with the chelation of silver ions and thiols.And that was different from the diffusion adsorption of mesoporous silica.Furthermore,the pH value of solution had little effect on the adsorption capacity of silver ions and the adsorption maximum is 102 mg/g in Slips isotherm with R2 =99.6%.关键词
巯基/二氧化硅/微球/吸附/银离子Key words
thiol/SiO2/microspheres/adsorption/silver ions分类
化学化工引用本文复制引用
刘岩,白晓,李婷婷,孙杨,沈启慧,于东冬,周建光..新型巯基功能化二氧化硅微球的制备及其对银离子的吸附[J].中山大学学报（自然科学版）,2016,55(6):136-139,4.基金项目
国家科技支撑计划资助项目（2012BAB19B07）；吉林省自然科学基金资助项目（20130101132JC）；吉林省教育厅“十二五”科研计划资助项目（2013－317）；吉林市科技计划资助项目 （）
